Bobbin for a transformer



FIG. 1 is a front elevation view of a bobbin for a transformer, showing our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof, the right side elevation view is a mirror image of the left side elevation view; and,

FIG. 6 is a perspective view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for, a bobbin for a transformer, as shown and described. 